A Nonionic Inhibitor with High Specificity for the UDP-Gal Donor Binding Site of Human Blood Group B Galactosyltransferase: Design, Synthesis, and Characterization
作者:Katrin Schaefer、Nora Sindhuwinata、Thomas Hackl、Miriam P. Kötzler、Felix C. Niemeyer、Monica M. Palcic、Thomas Peters、Bernd Meyer
DOI:10.1021/jm300642a
日期:2013.3.14
9-(5-O-α-d-Galactopyranosyl)-d-arabinityl-1,3,7-trihydropurine-2,6,8-trione (1) was designed and synthesized as a nonionic inhibitor for the donor binding site of human blood group B galactosyltransferase (GTB). Enzymatic characterization showed 1 to be extremely specific, as the highly homologous human N-acetylgalactosaminyltransferase (GTA) is not inhibited. The binding epitope of 1 demonstrates
9-(5- ö -α- d -Galactopyranosyl) - d -arabinityl -1,3,7-三氢-2,6,8-三酮(1)的设计,并作为供体结合位点的非离子型合成抑制剂人血B型半乳糖基转移酶(GTB)。酶促表征显示1具有极高的特异性,因为高度同源的人N-乙酰半乳糖胺基转移酶(GTA)未受到抑制。的结合表位1表明了arabinityl接头的高参与,而半乳糖残基仅进行接触以通过其C-2位点,这对于半乳糖和之间的区分十分重要的蛋白Ñ-乙酰半乳糖胺,通过GTA转移底物。该方法可以产生高度特异性的糖基转移酶抑制剂。